Update Linux in a Terminal

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Keeping linux updated is a simple hassle free task, unlike that other OS. On linux you can use a GUI app or update in a terminal. Both methods achieve the same result, but users usually have a preference. For me that’s the terminal.

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Time a Command in Linux

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Getting familiar with timing commands in linux is a good idea. This is a good way to time long operations in a bash script or from the terminal. You can time most commands and any bash script. My favorite use case is for timing source code compilation from build scripts.

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Redirect and Append to a File in Linux

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On every linux system you can redirect and append to the end of a file.

Linux has “stdout” which stands for “standard output”. Whenever you run a command in your terminal, the result is displayed in the stdout. You can redirect and append stdout to the end of a file.

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Bash Exit Status

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Regardless of whether a bash command ends successfully or not, it returns an exit status. Aside from letting you know that the command succeeded or failed, you can use the exit status code in bash scripts to determine what action to take with a conditional statement.

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Rename Files & Folders Linux Command Line

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Lets take a look at how to rename files and folders in linux from the command line.

Sure you can use your GUI and be done with it, but learning to do it from the command line can be quite useful. There’s also the added benefit of being able to use these commands in bash scripts.

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Remove Unused Kernels Ubuntu 18.04

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A question often asked… How do I remove old unused kernels from ubuntu 18.04?

Each time you receive a kernel update in your ubuntu 18.04 system updates, you end up with the old kernels remaining in your system. This can be useful in the event that the new kernel causes issues, you can always boot the old kernels. In time, old unused kernels can accumulate taking up unnecessary space on your drive.

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